Method and apparatus for evaluating the composition of an oil sample
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United States of America Patent
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Aug 12, 1997
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N/A
app pub date -
Nov 22, 1993
filing date -
Nov 22, 1993
priority date (Note) -
Expired
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Abstract
A method and apparatus for evaluating the composition of an oil sample. The method and apparatus are premised on the discovery that spectral differences can be observed in the luminescence, excitation, light scattering and absorption spectra in the near UV, visible and near IR regions for various crude oil components, such as asphaltenes, deasphalted crude oil and organic solid residues. Accordingly, in one preferred embodiment the method comprises illuminating an oil sample with light of a suitable excitation wavelength, measuring the resultant fluorescence therefrom and comparing the resultant fluorescence to appropriate standards derived from known components of crude oil.
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